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Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
Published on: January 24, 2018
Total ankle replacement: medium-term results in 200 Scandinavian total ankle replacements
1Department of Orthopaedic Surgery, Wrightington Wigan and Leigh, NHS Trust, Hall Lane, Wigan WN69EP, UK. peter.wood@wwl.nhs.uk
Summary
This study of 200 total ankle replacements found good medium-term survival rates. Scandinavian Total Ankle Replacement effectively restored anatomical alignment, though subtalar arthritis may persist.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Osteoarthritis often leads to debilitating ankle pain and malalignment.
- Total ankle replacement (TAR) aims to restore function and alleviate pain.
- The Scandinavian Total Ankle Replacement (STAR) is a widely used prosthesis.
Purpose of the Study:
- To evaluate the medium-term results of the Scandinavian Total Ankle Replacement.
- To assess implant survival rates and functional outcomes.
- To identify factors influencing outcomes and potential complications.
Main Methods:
- Prospective study of 200 total ankle replacements at a single center.
- Follow-up of surviving patients for a minimum of five years.
- Radiographic assessment including evaluation of talar position and component alignment.
Main Results:
- Five-year survival rate was 93.3% (95% CI 89.8 to 96.8).
- Ten-year survival rate was 80.3% (95% CI 71.0 to 89.6).
- 24 ankles (12%) required revision surgery (20 fusions, 4 further replacements).
- Anatomical alignment was generally restored, correcting anterior talar subluxation.
- Subtalar arthritis progression was noted in some cases.
Conclusions:
- The Scandinavian Total Ankle Replacement demonstrates favorable medium-term survival rates.
- Proper component orientation is crucial for optimal talar positioning.
- While TAR addresses ankle alignment, subtalar joint degeneration may continue post-operatively.
